/** Copyright (c) 2008-2009, Markos Evlogimenos
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * The name of Markos Evlogimenos may be used to endorse or
 *		 promote products derived from this software without specific
 *		 prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */

package game.packs;

@SuppressWarnings("unchecked")
public class PackTools
{

	public static boolean addDifference(final IntPack differencePack, final IntPack packToApply) {

		if (differencePack.getNames() != null)
			return false;

		final int[] differenceData = differencePack.getElements();
		final int[] applyToData = packToApply.getElements();
		for (int i = 0; i < differenceData.length; i++)
			applyToData[i] = applyToData[i] + differenceData[i];

		return true;
	}

	public static boolean applyAnalogy(final FloatPack analogyPack, final IntPack packToApply) {

		if (analogyPack.getNames() != null)
			return false;

		final float[] analogyData = analogyPack.getElements();
		final int[] applyToData = packToApply.getElements();
		for (int i = 0; i < analogyData.length; i++)
			applyToData[i] = (int) (applyToData[i] * analogyData[i]);

		return true;
	}

	public static FloatPack findAnalogy(final IntPack fromPack, final IntPack toPack) {

		final int[] fromData = fromPack.getElements();
		final int[] toData = toPack.getElements();
		final FloatPack analogy = new FloatPack(fromPack.getNames());
		final float[] analogyData = analogy.getElements();

		for (int i = 0; i < analogyData.length; i++) {
			analogyData[i] = toData[i];
			if (fromData[i] != 0)
				analogyData[i] /= fromData[i];
		}

		return analogy;
	}

	public static IntPack findDifference(final IntPack fromPack, final IntPack toPack) {

		final int[] fromData = fromPack.getElements();
		final int[] toData = toPack.getElements();
		final IntPack difference = new IntPack(fromPack.getNames());
		final int[] differenceData = difference.getElements();

		for (int i = 0; i < differenceData.length; i++)
			differenceData[i] = toData[i] - fromData[i];

		return difference;
	}

}
